machinery | Laboratory compounders Right:
Century’s CXE 26 uses slide mounted feeders to speed up reconfiguration
and Quality Control). The machines sport many common features including: quick-align shaft to gearbox couplers; shroud covers incorporating single-turn fasteners; quick-open guards for easy access to screw couplings and clutch; an air deflector on the end of motor; and a “point-of-use” tool kit with all the necessary tools mounted in a holder on the machine. “The response to our new QC3
-43MM machine has compact, with the control located in the machine frame under the barrel. The water cooling manifold is also built
into the frame. “We call it a ‘plug and compound’ concept,” says Schmitt. KraussMaffei Berstorff fully tests each unit electri-
cally in-house before delivery to make sure it is bug-free, and Schmitt says it can also test dosing and pelletizing units “when it is in our scope.” An optional electrically-driven screw pull-out unit – UltraGlide – can be integrated into the machine frame and takes a maximum of one minute to pull the screw out of the barrel. This makes it possible to examine the actual conditions of the process during test runs, as well as speeding up screw exchange. Century Extrusion offers the CXE 26 for laboratory
Right: Leistritz says its ZSE 27i MAXX is
suitable for lab and small scale production duties
applications and General Manager Charlie Spearing points out several key features on the this latest series. “It is feature rich and designed to save space, cost of ownership and to maximise productivity,” he says.” We have included slide mounted side feeders resulting in a reduced foot print and quick change over/time to reconfigure. We have also included an on-board control system and on-board ancillary systems like barrel cooling unit. This allows for reduced footprint, portabil- ity, plug-and-play electrics.” All barrel heater electrics and cooling lines on the
CXE26 utilise quick disconnects for rapid changeover. The machine produces a torque density of 15 Nm/cm3 for maximum process flexibility and throughput. The company has also developed the CX 26, which includes the same power train as the CXE version but has a more basic specification to enable Century to offer it at what Spearing says is “a very attractive price point.”
Focused on speed Entek’s smallest twin-screw model and lab compound- er is its QC3
27MM, part of the same family as the QC3
43MM model the company launched earlier this year at NPE 2015 (QC3
stands for Quick-Change, Quick-Clean, 42 COMPOUNDING WORLD | December 2015
www.compoundingworld.com
been tremendous, and we are happy to be able to now offer our customers the same features on our 27MM and 53MM twin-screw extruders as well,” says John Effmann, Entek Extruders’ director of sales & market- ing. “All of these benefits were things that our custom- ers communicated to us that they wanted to solve common problems, make their lives easier and ultimately improve their productivity.” Japan Steel Works (JSW) introduced a TEX 25 Alpha
III laboratory co-rotating extruder earlier this year. It is the smallest of seven TEX Alpha III extruders (which range up to 130mm diameter). JSW says TEX 25 Alpha III series advantages include a new gearbox design combined with enhanced gears and bearings, screw shafts and barrels. “The result is a high torque of up to 194 Nm per shaft (or 387 Nm in total) combined with wider processing windows as well as more powerful kneading and mixing,” it says. A standard torque limiting function on the TEX 25
Alpha III stops the screw to protect machinery and operators, while a low noise water-cooled version of the infinitely variable three-phase motor is optional, as is direct drive instead of the standard V-belt drive. JSW says its NIC special kneading barrel achieves good mixing/dispersion at low shear rate and high viscosity without dead zones for good compound material properties. The barrel features several longitudinal grooves along its surface for improved screw-to-barrel clearance. A TKD (Twist Kneading Disc)
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